As the development of the world,Internet plays an important role in our daily life.We can use it to chat with others,play games ,buy something in online shops,read ebooks and so on.Internet makes our life interesting and colourful.But just like each coin has two sides,there are also some bad effects of Internet.For instance,if a child cannot use it very well,he or she might be addicted to computer games.It is very harmful to child's study and life.All in all,we should make sense of Internet,such as English online dictionary,English movies and books.We can make it as a useful friend when we learn English.